Solar intermediate temperate heat collection and storage system

Abstract

The invention discloses a solar intermediate temperate heat collection and storage system and belongs to solar application. The solar intermediate temperate heat collection and storage system comprises an evacuated tube heat collector (1), a linear focusing heat collector (2), a circulating pump (3), a heat storage device (4), a flow diffusing pipe (5), heat storage balls (6) and a convergence layer (7); the heat storage device is a box body which is provided with a heat insulation layer in all directions; the lower end of the box body is provided with the flow diffusing pipe, the heat storageballs are located above the flow diffusing pipe, and the convergence layer is located above the heat storage balls; the flow diffusing pipe is in a tree shape composed of a main pipe and branch pipesand is provided with a plurality of pores; the upper end of the evacuated tube heat collector is connected with the lower end of the heat storage device through the linear focusing heat collector andthe circulating pump, the upper end of the heat storage device is connected with the lower end of the evacuated tube heat collector, and a heat collection and storage circulating loop is formed; andair serves as a heat transfer medium of the system. The solar intermediate temperate heat collection and storage system utilizes the air for heat transfer, utilizes concrete for energy storage and isthe highest in heat collection efficiency, the lowest in energy storage cost, capable of being suitable for multiple solar products and wide in application range.

Description

technical field [0001] The invention belongs to the field of solar energy application. Background technique [0002] Solar energy is the cleanest renewable energy, and there are many ways to develop and apply it. Among them, solar heat utilization based on vacuum tube collectors has already been marketed by virtue of its own cost-effective advantages. However, with the development of society, higher requirements have been put forward. For example, solar energy needs to be used to produce steam, making solar energy an industrial energy source. In this way, solar energy can contribute more to the development of production and energy conservation and environmental protection. Vacuum tubes are cheap, have good insulation, and have a high output temperature. However, in order to output more than 100 degrees for the production of steam as industrial energy, heat transfer oil is required as the medium. Since the medium reserve of the vacuum tube is too large, the installation co...

AI Technical Summary

Problems solved by technology

Although there are useful heat pipes or u-shaped tubes to reduce the medium storage, the cost has risen again; the vacuum tube has a large medium storage, and when it stops working, the large amount of heat contained in the medium in the tube cannot be fully utilized, which also reduces Heat collection efficiency of vacuum tubes

Also, the instability of solar energy also affects its application in industrial energy

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